The mating of an Xg(a+) man and an Xg(a-) woman will produce which of the following?

In this genetic scenario, the Xg gene is located on the X chromosome and is involved in the expression of the Xg antigen, which can be either present (Xg(a+)) or absent (Xg(a-)). The man has the genotype Xg(a+) on his X chromosome, and the woman has the genotype Xg(a-) on one of her X chromosomes.

When an Xg(a+) man and an Xg(a-) woman reproduce, the inheritance of the Xg gene will follow the pattern of X-linked inheritance. Sons inherit one X chromosome from their mother and one Y chromosome from their father. Daughters inherit one X chromosome from their mother and one X chromosome from their father.

The potential combinations from the father (Xg(a+) by virtue of his X chromosome) and mother (Xg(a-) due to her X chromosome) lead to the following results:

• Sons will inherit the Y chromosome from their father and the Xg(a-) chromosome from their mother, making them Xg(a-).

• Daughters will inherit the Xg(a+) chromosome from their father and the Xg(a-) chromosome from their mother, making them Xg(a+).

Thus, the combination of these genotypes results in X